[Battlemesh] Solar panel

Xavier Carcelle xavier.carcelle at gmail.com
Tue Jun 8 11:01:14 CEST 2010


Benjamin : Thanks for this PowerSupply input

Can we keep a thread for
*SolarPanel references
*PowerSupply improvments
*Battery issues

->Do we have a tool that can be used to monitor the voltage/current
consumption and forecast the network consumption and availability on
battery ?

Grazie.
Xavier.

On Tue, Jun 8, 2010 at 10:35 AM, Benjamin Henrion <bh at udev.org> wrote:
> On Tue, Jun 8, 2010 at 10:26 AM, Xavier Carcelle
> <xavier.carcelle at gmail.com> wrote:
>> Ciao tutti,
>>
>> I had a discussion w/ some of you guys concerning the solar panel that
>> we could use for others events powering embedded devices.
>>
>> Axel : We discuss that point and you were mentionning reference of
>> Solar Panel that you know ?
>>
>> What reference do you recommand ?
>
> I had a lengthy discussion with the austrian guy with a beard (Markus
> I think) who has changed many voltage regulators on the fonera. He
> also played with the Wisp station "changing the voltage regulators" to
> go down below 1W.
>
> He said for example that putting the ethernet adaptor to 2.6v works,
> while 2.49v does not. Also in 10mbits mode, it consumes much less then
> in 100mbits.
>
> The table here says that you can go down to 2.30W just by changing the
> bad voltage regulators:
>
> http://wiki.fon.com/wiki/Energy_consumption
>
> I am gonna work with Pascal at HSB on changing those bad voltage
> regulators, and make the fonera work on 3.3v:
>
> http://hackerspace.be/Fonera_in_3.3v
>
> Note that the picture of the batteries does not work, you need a
> voltage regulator low drop to make it work with 4 batteries of 1.2v.
>
> We should be able to produce stress measurements once we managed to
> change the main voltage regulator.
>
> Markus also said that you can change the voltage regulator of the
> radio chip below the faraday RF cage, and he made tests to the point
> of unsoldering most of the components and trying them out with lower
> voltages.
>
> Maybe Markus can say more about that?
>
> --
> Benjamin Henrion <bhenrion at ffii.org>
> FFII Brussels - +32-484-566109 - +32-2-4148403
> "In July 2005, after several failed attempts to legalise software
> patents in Europe, the patent establishment changed its strategy.
> Instead of explicitly seeking to sanction the patentability of
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